.join {
  align-items: center;
}

.join .button {
  min-width: 250px;
  max-width: 100%;
  min-height: 56px;
  padding: 14px 26px;
  line-height: 1.25;
  text-align: center;
  white-space: nowrap;
}

@media (max-width: 650px) {
  .join {
    align-items: stretch;
  }

  .join .button {
    width: 100%;
    min-width: 0;
    white-space: normal;
  }
}